Intel’s Ivy Bridge Processor: Leaner and Meaner - dixonknour2001
Intel's newest generation of desktop and mobile CPUs, code-named Ivy Bridge over, debut today. In our tests, the chips showed moderate general public presentation gains and substantial graphics improvement, all piece sipping importantly less world power.
Built in the ship's company's 22-micromillimetr, tri-gate manufacturing process, the new CPU contains 1.4 million transistors in a scant 160mm2 die area. The CPU includes the redesigned Intel HD 4000 graphics processing unit, which delivers the best integrated nontextual matter performance we've ever seen. In fact, in our tests, HD 4000 graphics blew aside the carrying into action of an entry-grade discrete graphics card.
Nowadays, you'll encounte Ivy Bridge chips primarily in desktops and all-in-ones. The first Ivy Bridge chips on the market will cost the higher-wattage models best suited to those systems and to powerful desktop replacement laptops (you'll see a few Ivy Bridge deck models in that segment, too). It will take another six weeks or so for the dual-core and lower-wattage models to hit the market, indeed the majority of thin-and-light and everyday affordable laptops won't update to the new chips until past.
Thus how will you be able to tell whether you have an Ivy Bridge CPU in your new computer? Look for the "3rd Generation Core CPU" brand name name. You can also tell from the mannikin number: Systems with a 3000 numerate after "Core i5" or "Core i7" use Ivy Bridge over, patc systems with a 2000 model number are Sandy Bridge. So, a Core i5-2600K, e.g., is a current-generation Sandy Bridge processor, while a Burden i5-3550 is a current Ivy Bridge circuit model.
Will you pay more for Common ivy Bridge? Not really. Enthusiasts buying parts to physical body their own systems power pay a trifle more at the start when supplies are scarce, but you shouldn't expect a significant difference in Leontyne Price between complete systems made with English ivy Bridgework chips and the similarly organized systems of today using Sandy Bridge circuit.
A Moderate Performance Boost
Intel estimates that the Core i7-3770K should run most central processing unit-intensifier chores roughly 5 to 10 percent faster than the similarly clocked Core i7-2700K Sandy Bridge circuit CPU and our tests generally bore that out.
The Microcomputer World Labs ran WorldBench 7 on three platforms. Our baseline system is made-up around an Intel Core i7-2600K (non 2700K), which runs at 3.4GHz and has a maximum Turbo Hike up time of 3.8GHz. The baseline scheme also includes an Nvidia GeForce GTX 560 Titanium discrete artwork posting.
You'll get a line three systems compared below. The Core i7-3770K is the freshly Ivy Bridge processor; it was tested both with the Intel HD 4000 integrated artwork and with a GeForce GTX 560 Ti graphics wag. The Burden i7 2600K is the circulating-generation Sandy Bridge central processing unit, equipped with a GeForce GTX 560 Ti graphics posting. This is our "service line" WorldBench 7 system used to determine what a WorldBench score of 100 should be.
When both systems were equipped with the separate graphics card, the Ivy Bridge CPU scored 10 percent above the baseline–which is greater than a mere 3 percent clock-rate disparity would indicate. Also, the Ivy Bridge system lengthwise with only the Intel HD 4000 GPU still scored near 4 percent high than the Core i7-2600K. Bear out in bear in mind that WorldBench 7 does non incorporate 3D gaming-graphics tests. For more on the graphics vantage of English ivy Bridge, discipline out our feature happening Hedera helix Bridge graphics.
Overall, the Hedera helix Bridge CPU looks to perform slightly better than an equivalent Sandy Span CPU, while consuming little overall power. That's a acquire on the desktop side, but the real gains will likely be along laptop systems, where the performance gain joint with a lower power draw may result in laptops that fling longer battery life piece improving operation.
Next Page: The Architecture
Intel uses what it dubs the "tick-tock" model of product design. The "tick" refers to rolling out a new manufacturing process–in this type, 22nm. The "tock" occurs when Intel ships a hot microarchitecture victimization an existing manufacturing process. The rife-generation Core i5/i7 Light-haired Bridge CPUs represented a "tock."
Indeed the new Common ivy Nosepiece processor is just a "mark off," honourable? The same thing on a new manufacturing process? That's mostly true up: The x86 Central processor percentage of Ivy Bridge contains only venial tweaks to the current Sandy Bridge architecture. However, the GPU inside Ivy Bridge circuit is a substantial redesign.
Basic Speeds and Feeds
On the surface, Ivy Bridge seems startlingly kindred to Sandy Bridge. Comparing the two high-end models of the desktop CPU cartesian product line reveals nearly no surface differences.
| FEATURE | Ivy Bridge (Core i7-3770K) | Sandy Bridge (Core i7-2700K) |
|---|---|---|
| Base clock oftenness | 3.5GHz | 3.5GHz |
| Easy lay. Turbo frequency | 3.90GHz | 3.90GHz |
| Shared L3 cache size | 8MB | 8MB |
| Graphics base frequency | 650MHz | 850MHz |
| Graphics max. self-propelled clock | 1150MHz | 1350MHz |
| Max. supported memory board clock | 1600MHz | 1333MHz |
| Thermal blueprint power (TDP) | 77W | 95W |
| Die size | 160mm2 | 216mm2 |
Two key differences are immediately observable, and hint what Ivy Bridge is really just about. At the book of fact clock frequencies, Hedera helix Bridge is rated at 77W, versus 95W for Sandlike Bridge over. And the die size, at 160mm2, is 25 percent smaller. Ivy Bridge is both Thomas More power efficient and cheaper to produce–in damage of numbers of die per wafer–than Sandy Bridge. The Core i7-3770K is the high stop of the Ivy Bridge over lineup at launch, patc the 3.4GHz Substance i7-2600K was the high end at the initial launch of Arenaceous Bridge. It's likely, then, that we'll see higher-clocked Ivy Bridge CPUs in the future.
Another interesting difference is the time-frequency disparity betwixt the two artwork cores. Ivy Span's GPU runs 200MHz slower than the Sandy Bridge GPU. Still, the Ivy Bridge circuit HD 4000 GPU offers additional carrying into action since it has much execution units (16 versus 12) and texture units (ii in Ivy Bridge versus a unique texture unit in Light-haired Bridge). For more information about the architectural changes in Common ivy Bridge graphics, run down our accompany story.
Succeeding Page: Hedera helix Bridge Enhancements
Common ivy Bridge Mainframe Enhancements
To boot to the die shrink to a 22nm process, Intel successful a few tweaks to the Sandy Nosepiece architecture for Hedera helix Bridge. Many of these adjustments–including efforts to improve instruction efficiency aside flared the number of instructions per time–aren't obvious from a look at the specification sheets.
One interesting aspect of Ivy Span is just how large a portion of the chip the fres graphics engine consumes. Toss in the memory controller and display I/O, and Ivy Bridge is near a System-happening-Chip, though it lacks on-break off I/O for networking, USB, and storage.
One new feature is the incorporation of a sophisticated, connected-chip, digital random number generator. This addition improves overall encryption security by making cay propagation less predictable; the DRNG is open via a new CPU instruction, though, and may be used by any application needing better ergodic come generation. Supervisory mode execute protection is another new feature designed to protect against certain types of malware attacks on the processor.
Perhaps the greatest concentrate of the Ivy Bridge design is developed power efficiency. Enhancements include:
- DDR memory I/O Great power Gating: When the processor enters deep sleep–which it can do even during brief idle periods–the great power needed for memory I/O is minimized.
- Configurable TDP (outpouring design power): One particular CPU product can support multiple TDP points, which allows OEMs to build CPUs into cases with different thermal envelopes while maximising operation.
- Power Aware Break Routing: This mouthful simply substance that applications programme tasks or threads can be routed to a especial CPU CORE founded on power-efficiency of necessity, rather than simply to maximize unjust operation.
Some additional features, such as more-granular relative frequency adjustments for memory and high multiplier factor ratios, exist mainly for overclockers who deprivation better ascendance of the overclocking or underclocking capabilities.
The Z77 Platform
On with the recent CPU comes a newborn chipset, the Intel Z77. Intel finally adds native USB 3.0 into its core logic with the Z77, supporting ascending to 14 USB ports in total, with up to 4 of them being USB 3.0 (SuperSpeed) capable.
Intel regards the motherboard chipset–which is really conscionable an I/O Controller Hub–as entirely one component of the platform. The mixed memory controller and PCI Express comptroller built into the Ivy Bridge CPU itself is the separate half of the platform. Like Sandy Bridge, Ivy Bridge supplies 16 PCI Express lanes usable for art. The full full complement of 16 lanes is allocated to a various installed art card; adding a second GPU means that each graphics tease gets just eight lanes, but given the overall bandwidth uncommitted with PCIe 3.0, most users won't notice whatever real set to performance therein configuration.
The I/O Accountant Hub adds another eight PCI Express lanes, simply those are better used for expanding upon cards such as audio and networking, rather than nontextual matter, since going through the Z77 I/O accountant, up through Intel's DMI port, and into the CPU would likely add more latency than you'd want for your graphics card.
The extra PCIe lanes might also be victimized for Thunderbolt I/O, helping to make for the interface to PC users, though not all motherboard may offer a Thunderbolt connector. (The Gigabyte Z77-UD3 motherboard we used for testing, for representative, didn't include Thunderbolt.) Regardless, Thunderbolt wish still require a separate controller fleck, every bit it does nowadays. Display support has broadened, with chockful support for equal to three simultaneous, independent displays.
Storage defend includes ascending to two 6-gbps SATA and four 3-gbps SATA connections. Some boards May include Intel's Rapid Depot technology have, which allows users to add a half-size solid-state drive to act a fast, persistent cache for standard hard drives. Rapid Storage made its debut with Intel's sooner Z68 chipset.
The Z77 occupies the high end of the Ivy Bridge program spectrum. Intel will also ship the H77 and Z75 chipsets, which will likely be designed for lower-cost platforms. Both remove some features, such as Thunderbolt, or offer support for solely a single PCI Express nontextual matter tease.
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Source: https://www.pcworld.com/article/470107/intels_ivy_bridge_processor_leaner_and_meaner.html
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